Steam boiler



J. J. REGAN STEAM BOILER Sept. 15, 1931.

' 2- I I I INVENTOR.

' ATTORNEY.

J. J. REGAN STEAM BOILER Sept. 15, 1931.

Filed March 12, 1929 3 Sheets-Sheet 2 INVEN TOR. Ja Jzi m flxtizflz A TTORNE Y.

J. J. REGAN STEAM BOILER Sept. 15, 1931.

Filed March 12, 1929 3 Sheets-Sheet 5 Iliilllllll ll llll IIIIIIHHHHH HHHHHHUHHHHH I I HH.

INVEN TOR.

A TTORNE Y.

- partlyin section of the construction shown. header chamber 56. i

725 of Fig. 1.

Patented Sept. 15, is: p

DYSTAT IS fl ENT y Y mmnsmnnenmonnos memscmromn SVTEAIMBOIIVJEBF 1 Applicationifiled Marcela, 1929. Serial No. 346,354.

This invention relates to a steam boiler con municates pipe 33 Which leads past valve 24 struction embodying the super-heating printo nipple 35 whichconnects with the'pump ciple. '-1 f v V 1 V Pump 34has an outlet pipe37 which Among the objects of-the invention is to leads to chamber 55 of header 5 1; The in- 5 provide a boiler tube?constructionfwhich can ner chamber 56 of said header 54'is provided 55 be readily asseinbled,easily disassembled for withanoutlet pipe '57, which is a branch of cleaning, which will not be apt to leak, and pipe 40. i Said 'pipe 40 is at each end mm which will be more durable, economical, and nected to drum 25 by means of a branch dependable in its operation thaniboilers which pipe 40a. i r i relate most nearly to its type; I An emergency pipe 36, controlled by a 00 Other objects and advantages may hereinvalve:86a, is connected to nipple 35 as shown. after appear. g I Intheupperportion of thechamber 'ii is Referring to the accompanying drawings located a heat economizing system 19 of outer which illustrate-at present deemed to be 9. tubes 20 and inner tubes 21 which are in compreferred embodiment of the invention, munication with chamber 550-bit header 54 65 Fig. 1 isaverticalj sectional viewof a come and which are assembled in relation to each plete boilerconstructionbuilt according to otheraccordingtothe plan already described the principles of the invention. 1 with reference to the tubes 6 and 10. Said Fig. 2 's a view {partly in elevation and outertubes communicate withthe inner .70 in:Fig...l, the sectioned portion being indi The steam and water drum 25 is supplied catecl by line 2f2 onFig. 1. V With. steam through a steam pipe 26. which Fig. 3 is atransverse section of the. super. leads to the interior of said drum in the chain heating coil and adjacent parts on line 3',3, ber 27-of which the steam collects. 1 Pipe 25?) v j leads from the lower sideof drum 25'toeach Fig. 4 is ,a, cross section on line 4-4: .Of; header Chamber 2 Fig. 3. i i 1 I At the lower endof the chamber or spaces Fig. 5 isa cross sectional detail online 51-5 28 and 29 are provided respectively the clean of Fig. 1. out pipes 30 and 31 which communicate with 30 I R f in in detail- .to the drawings,withthe portion of said chambers where the sedi- 8 in the main chamber 5 are mountedin superment settles. r z u posed series the outer tubes 6 which, as viewed Describingthe construction more in detail, in Fig. 1, aresupported at their left ends by and beginning at the point where the cold the inner header plate 7'int0 which they are water feed pipe 15 is located, from said pipe 735 screwed, said tubes 6 being supported near 15 water is fed to the lower end of the cooling 85 their right ends bytheheader plate and jacket 8. As well shown in Fig. 1 said cool-- having their right ends .closedwith caps 9. ing Jacket is spaced somewhat to the left of WVithin said outer tubes ,6 are telescoped the the closure capsl) with which the outer tubes inner tubes 10, the left ends of saidtubes 10 6 are closed at their ends, and the'upper' end being screwed into the intermediateheader of said jacket is provided with an outlet 90 plate 11. 1 I r i branch pipe 33 which leads to the pump 34 There are a multiple of the parallel upright through the nipple 35. If for any reason it headers 12, as shown in Fig. 2 each having becomes necessary to supply cold water di-' a water and steam piping systemcomprising rectly-to the pump 34 this may be conducted pipes 6, 10,256, 26, 30 and 31,. as will .hereim through the emergency pipe 36, having valve after be described. V q 36a, which also is connected up with said nip- Cold water is supplied, throughapipe;15 ple 35. I to the chamber 16 ,within water jacket 8, Said pump 3.4 is provided with an outlet through connection 22 into the lower portion pipe 37-which leads to the auxiliary series 19 of water jacket 23.; With jacket23 com of heating-tubes20 and 21, said tubes 2Ofeach ter-mediate header plate'i. The caps9- which '1, provided at its left end with right handex ternal screw threads which screw into the inclose the right ends of said tubes 6 are pro:

vided with threads'which are reversely' 'cut" to the threads in the header '1.

The housing 31 is divided longitudinally by partition 31 w;- iritotwo chambers 310 and- 31d. Each .of pipesi communicates with chamber 310, and each of pipes 31 communicates with chamber 31d, thus forming an efflcientcleansout system for theentire, system. Chamber 310 is-provided at each end with a draw oii'pipeBla, and chamber 31d is provid-. edat each end with a draw-01f pipe 81f.

7 Chambers 55 and 56 (see Fig. 4),,arerespectively provided with clean out pipes 57 andl58, both of which communicatewith pipe 59 through intermediate,connection 60, to provide, for cleaning the heat-economizing system. I n v 7 Into the main. series oftubes extends a baffle plate l't',;parallel withpsaid tubes and occupying the right hand portionof the apparae tus as viewed in Fig. 1. In theupperright hand portion of the fire-box 5251s seen in this. view, isshown a baflle wall-48 The bafile Wall 4 8 isipreferably shorter than thenbafile wall 47 in order-thatthe first whirling-effect 7 given to the heated gases. may be reversed by which keep. down-the temperatures of the the upper baflleel as the air passes up betweenthe boiler tubes- '11.. .v f w Upon passing baiileti the column 0t heated .gasesvis.defiectedagainst the headers12, whence, lbythe suction; of stack iit is re versely drawn through upper tubes of the main coil systemandthereaiter through auxiliary or heat-economizing system 19: r

Referringtoexternal elementsof the apparatus, theupper outer casing l5 is provided with afront door 50 to conserve the heat and to afior'd; access to the sections of the header 12'. The apparatus is provided with a stack 50 having therein a damper 50d;

A back door is preferably provided. All

parts are provided with suitable layers of insulating material. as shown.

A check valve 57a inpipe 57 prevents back flow. of drain water. 1 Both end portions of the series of superposed pipes Ga-re enclosed by water jackets corresponding end walls of the combustion chamber. A like constructionof jackets. cools both ends of: the series of auxiliary super posedpipes 19; --'I1he:water onwater and steam circulates through all these ackets inits advance.

' The auxiliary series of pipes 19 extends at substantially right angles to the main series of pipes 6, hence the flame in passing up through all these pipes of both series is subdivided in a more eflicient manner and a more complete absorption of the heat is effected than if all the heating pipes'of the system eX- tended in'the same direction.

In-operatmm-thefied water pipe 15 being connected to a water pipe under city pressure, or to any other suitable supply, water from said. pipe; 15,-is fed to the lower end of the cooling jacket 8 and after passing up through said jacket is drawn through connection 22, into-the; lower portion of Water.

jacket 23. In passingthrough this water jacket the cold water coming from the pressure supply not only keeps down the tern.-

perature of the end wall of the-combustion chamber but also gives a preliminary heating to the liquid as it passes from said pres,- sure supply toward the pump 34 which it reaches later in itscourse, and wherebythe pressure is stepped up sufliciently to cause the'liquid and steam to advance as required. After passing through said jacket it issues from the upper end thereof? through pipe33, thence by: way of nipple 35 to the pump 34;. To control the flow as just described valve 24 is open and valve 36wisclosed. From pump 34 it is forced'upi through the pump outletpipe 37 through chamber=55of header .54, thencethrough the auxiliary coil: 19, pass ing first into the'innen tubes 211o said coil and thence into the outer tubes 20 thereof,

after which it is conducted into chamber 56 then out throughpipe 57wthence out through pipe 40 and its branches 40a into the drum 25. The hot water-thus supplied to said drum, after being further heated therein, flows out through the drum-outlet pipe 25?) whereby it is conducted to the upper end oftheouter header chamber 28. From the outer header chamber 28 the water passes through the series ofi-nn'erf tubes 10 through the header plate 1 1 whence,-as seen in-Fig. 1,it is discharged into the right hand end portions of the-outergtubes whereby it is reversely directed to the inner header chamber 29 wlience it escapes as; steam from the upper end of said chamber through the steam pipe26tothe steam drum 25."

Claim 2 r In a boiler construction, a steam andwater' drum,' a main boiler tube section comprising a main series of superposed parallel pairs of water heating tubes, each of said pairs consisting of'anouter tube and an inner tube telescoped within said outer tube, all of said tubes havingopen' ends which are located at thesame side of the boiler tube section, means to well off the portion; of said chamber which is occupied with the open ends of said" tubes to provide two chambers, one of which is in communication with the outer series of tubes and the other of which is in communication with the inner series of tubes, conduits whereby each of said two chambers are separately connected with said steam and water drum,

a cooling jacket through which said telescopically arranged tubes project adjacent to the other side of said main boiler tube section, an axially boiler tube section located above said main boiler tube section and consisting of inner and outer tubes having also two chambers into which their open ends discharge and a cooling jacket adjacent to their other ends, there being conduits arranged to signature.

- JAMES J. REGAN. 

